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What does the OH, OE tags refer to in Facebook Video URL?

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What does the OH, OE tags refer to in Facebook Video URL?

Post Posted: Jun 10, 19 00:08

What does the OH, OE, and GDA fields represent in Facebook Picture/Video URLs?

For Example;


what I found like abbreviations might be OH= object header (32 Bit) and GDA = Global Data Area but what is OE (8 Bit) for ? If Not, then what is the purpose of these parameters ? What does these parameters stands for and what they are referring to ? Please further explain in the light of below code, How to interpret that ?

One important finding I found in the below mentioned VIDEO artifacts recovered that; oh= & oe= tags are same that may exhibits the stream file as I verified from the URL as well. But the question is simple. What these oh & oe tags stands for?


{"url":"https:\/\/scontent.fisb5-1.fna.fbcdn.net\/v\/t58.16807-6\/48093752_617068788804743_4293756961331085312_n.mp4?_nc_cat=110&efg=eyJ2ZW5jb2RlX3RhZyI6ImRhc2hfYmFzaWNfdjRfaHEyX2ZyYWdfMl92aWRlbyJ9&_nc_ht=scontent.fisb5-1.fna&oh=e89d31b829765208758429446cc9c623&oe=5CFA9D3C","start":0,"end":964,"segment_type":"init","mime_codec":"video\/mp4; codecs=\"avc1.4D401F\"","representation_id":"617068782138077v"},

{"url":"https:\/\/scontent.fisb5-1.fna.fbcdn.net\/v\/t58.16807-6\/48093752_617068788804743_4293756961331085312_n.mp4?_nc_cat=110&efg=eyJ2ZW5jb2RlX3RhZyI6ImRhc2hfYmFzaWNfdjRfaHEyX2ZyYWdfMl92aWRlbyJ9&_nc_ht=scontent.fisb5-1.fna&oh=e89d31b829765208758429446cc9c623&oe=5CFA9D3C","start":965,"end":1128,"segment_type":"sidx","mime_codec":"video\/mp4; codecs=\"avc1.4D401F\"","representation_id":"617068782138077v"},

{"url":"https:\/\/scontent.fisb5-1.fna.fbcdn.net\/v\/t58.16807-6\/48093752_617068788804743_4293756961331085312_n.mp4?_nc_cat=110&efg=eyJ2ZW5jb2RlX3RhZyI6ImRhc2hfYmFzaWNfdjRfaHEyX2ZyYWdfMl92aWRlbyJ9&_nc_ht=scontent.fisb5-1.fna&oh=e89d31b829765208758429446cc9c623&oe=5CFA9D3C","start":1129,"end":421284, "segment_type":"data","mime_codec":"video\/mp4

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